Plunger-guide construction



W. P. KRAUSE.

PLUNGER GUlDE CONSTRUCTION.

APPLICATION F1LD1uNE2e.19\.

1 ,$28,526. Patented Jan. 20, 1920.

2 SHEETS-SHEE l.

W. P. KRAUSE.

PLUNGEH GUIDE CONSTRUCTION.

Patented Jan.20,1920.

A APPLICATION FILED IUNEZG, 1916. 1,328,526.

2 SHEETS-SHEET 2- um! I Hum UNITED STATES PATENT OFFICE.

WILLIAM P. KRAnsE, OE CHICAGO, ILLINOIS; .essIGNoR 'ro MUMFORD MOLDINGMACHINE COMPANY, OE CHICAGO', ILLINOIS,` A CORPOEATON or NEW JERSEY.

Application filed .Tune 26, 1916.

To all whom imag concern.-

Be it known that WILL-IAM I). a citizen of the United Chicago, in thecounty of Cool; and State of Illinois, have invented certain new anduseful Improvements in Plunger-Guide Construction, of which thefollowing is a specification. j

This invention relates to improvements in plunger guide construction,and more especiallyv to that type of molding machine in which a plungeror piston reciprocates in a cylinder. The main object is to provide,such machines, j means v y KRASE, States, residing at in combinationwith for guiding the reciprocal movement of the plunger, such meansbeing adjustable to compensate for wear, and also functioning tolubricate the plunger member in its move ment.

Another object resides in the provision of a plurality of plungerguiding means, each of which is separately adjustable, so that as oneportion of the machine wears more than another, the greater wear may bereadily compensated for, thereby7 insuring proper centering of theplunger member and the allied mechanism. These and other objects of theinvention will be more fully set forth and described in the followingspecifica-tion and shown in the accompanying drawings, in which- Figure1 is a vertical section through a machine embodying my invention, thetable thereof being shown in elevation.

Fig. 2 is a transverse section, taken along the line 2*2 of Eig. 1.

Eig. 3 is an elevation of one of the guiding` members in position; and

Eig. 4c is a perspective view of the same disassembled.

Like numerals refer to like elements throughout the drawings .in.whioh10 indicates the base of my machine, upon which is suitably mounted andattached a cylinder 11. in which the plunger 12 is arranged toreciprocate, said plunger carrying the mold table 13. This general typeof machine is a plain jolt machine embodying therein what is lmown asthe Mumford-Huggins val've construction, illustrated and described inPatent No. 1,167,511, of January 11, 1916.

It is not believed to be necessary to describe the valve mechanismherein, as the saine forms no component part of the present invention.

Specification of Letters Patent.

Patented Jan. 20, 1920. Serial No. 105,997.

' vided,`the same being constructed with peripheral flanges or collars1l and arranged for attachment to the collars 11b by means of the studsor bolts 15, as shown in Fig. 2. These guiding members project into thecylinder 11, and abut against the flattened surfaces 12l of theplungers, shims to an)7 desired extent being interposed between theflanges 14a and the collars 11b. The guid ing members la are centrallyapertured and hollowed out, as indicated by numeral 14th, and the cavityso provided is filled with fibrous material, suoli as waste felt, or thelike, indicated by the numeral 17, the saine being compressed to asuitable degree. A filler opening 14C is provided, in which is threadeda plug lil", having an aperture 14e therethrough, this .aperture beingnormally closed by a. plug lati. Either the opening 14C or the aperture14e may be utilized for pouring oil or other lubricant into the cavity1l, to saturate the fibrous material which bears against the surface ofthe plungers and maintains the same in a constantly lubricatedcondition.

In the functioning' of the apparatus shown, as wear takes place it maybe compensated for by removal of one or more of the shims, andconsequent advancing of the guiding plugs or members, and, as oftenhappens in this art, when the center of gravity of the load carried bythe table 13 does not coincide with the axes of the plunger unequal wearresults on different surfaces of the plunger, rendering it advantageousto provide individual adjustable guiding mem1 bers for the purpose ofcompensating for such unequal wear. This separate compensation rendersit possible properly to center and maintain in centered position theplunger. At the same time the construction a'bove described maintainsthe plunger in lubricz-ted condition.

Cil

It will bev obvious that my invention is susceptible of numerousmodications or im provements, and I do not wish to be restricted to theform shown or described beyond the scope of the appended claims.

What I claim is:

1. In molding apparatus, in combination with a cylinder and plungerreciproca ble therein, a plurality of separately adjustable guidingmeans adjustable relatively to said plunger and bearing thereagainst.

2. In combination With a cylinder having a reciprorable plunger therein,separately adjusting guiding members lying against said plunger, andlubricating means carried by each of said guiding members.

In combination with a cylinder having a reciprocable plunger therein7independently adjustable guiding members bearing against said plungerand lubricating means ,carried by said guiding means.

4L. In combination with a cylinder having a plunger reciprooably mountedtherein, separately adjustable guiding members carried b v said cylinderand bearing against said plunger, and shims inserted between saidguiding members and cylinder.

5. In combination, a cylinder, a plunger reciprocably mounted therein,said cylinder being provided With side apertures, and guide membersinserted through said apertures and bearing against said plunger.

6. In combination, a cylinder, a plunger reciprocably mounted therein,said cylinder being provided with side apertures, iianges surroundingsaid apertures, and guide members inserted through said apertures andbearing against said plunger, said guide members being secured to saidflanges.'

7. In combination, a cylinder, a plunger reciprocably mounted therein,-said cylinder being provided with side apertures, hollow guide memberspassing through said apertures into engagement with said plunger andbeing movable to provide for adjust-I ment oi' said plunger, andlubricating means in said hollow guide members and in contaet with saidplunger.

In testimony whereof, I have subscribed my name.

IVILLIAM P. KRAUSE. IVitnesses JAMES T. LEE, PHILETUS WV. GATES.

